/Engine/Plugins/Experimental/Mutable/Source/MutableRuntime/Public/MuR/Serialisation.h
Complete a data request operation. This method has to block until a data request issued with OpenFile has been completed. After returning from this call, the ID cannot be used any more to identify the same operation and becomes free.
void EndRead ( [OPERATION_ID](API\Plugins\MutableRuntime\MuR\ModelReader\OPERATION_ID) )